Multifunctional coring bit for geotechnical investigation

Abstract

The utility model relates to the technical field of geotechnical investigation, and discloses a geotechnical investigation multifunctional coring bit which comprises a pipe body, a plurality of fixing columns are fixedly connected to the top of the pipe body at equal intervals, first tool bits are fixedly connected to the tops of the fixing columns, hollow columns are fixedly connected between every two adjacent fixing columns, and the first tool bits and the second tool bits are fixedly connected to the top of the pipe body. The bottoms of the inner sides of the multiple hollow columns are rotationally connected with threaded rods, the top ends of the multiple threaded rods are fixedly connected with limiting blocks, and the tops of the outer sides of the multiple threaded rods are in threaded connection with sliding blocks. When the device performs a drilling task, firstly, the second tool bit drills until a hard rock stratum is reached, then the gear ring is rotated, so that the sliding block can drive the sliding column to slide up and down in the hollow column, the second tool bit is contracted along with movement of the sliding column, the first tool bit makes contact with the hard rock stratum to continue drilling, and the type of the cutting teeth is rapidly adjusted; the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of geotechnical investigation, especially to the geotechnical investigation multifunctional coring drill bit. BACKGROUND

[0002] Geotechnical investigation is the abbreviation of geotechnical engineering investigation, and is the core link of engineering geological survey, mainly aiming at investigating, analyzing and evaluating the rock and soil of construction site and its occurrence geological environment, and providing reliable geological basis for engineering planning, design and construction.

[0003] With the expansion of the engineering scale of modern society and the expansion to complex geological areas, the traditional survey means only rely on surface observation and shallow excavation and experience inference cannot meet the quantitative demand of stratum information, so the geotechnical investigation coring drill bit needs to collect columnar rock core samples from underground continuously, and convert invisible stratum structure into intuitive analysis entity sample.

[0004] The early geotechnical investigation coring drill bit adopts the fixed cutter structure of welding or integral molding, and the cutting teeth are directly fixed on the drill bit base, forming a single function drilling tool, because the soft and hard conditions of the rock and soil layer are different, the fixed cutter drills different strata of soft soil and hard rock, and the cutter cannot adapt to different terrains and is frequently damaged, in order to solve the above problems, the existing technology replaces the suitable cutter according to the soft and hard conditions of the rock and soil layer in the drilling process to reduce the wear rate of the cutter, but in actual use, because the cutter needs to be replaced frequently, it cannot be quickly adjusted to the type of cutting teeth, and it is time-consuming and labor-consuming, and cannot meet the needs of the user. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides the geotechnical investigation multifunctional coring drill bit, which aims at improving the problem that the cutter cannot quickly adjust the type of cutting teeth in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: the rock and earth investigation multifunctional coring drill bit, including the tubular body, the top of the tubular body equidistant fixedly connected with a plurality of fixed column, a plurality of the top of fixed column all are fixedly connected with cutter no.

[0007] As a further description of the above technical scheme:

[0008] The knocking mechanism includes the shaft sleeve, the shaft sleeve is arranged in the outer wall middle lower part of the tubular body, the right side of the shaft sleeve is fixedly connected with the casing, the bottom of the casing is fixedly connected with the motor, the top of the motor penetrates the casing and is fixedly connected with the eccentric wheel, the top left side of the eccentric wheel is rotatably connected with the connecting rod, the other end of the connecting rod is rotatably connected with the knocking column, and the left end of the knocking column penetrates the casing and the shaft sleeve in turn.

[0009] As a further description of the above technical scheme:

[0010] The outer wall middle upper part of the tubular body is provided with a sliding groove, and the inner bottom of the sleeve ring is slidably connected in the sliding groove.

[0011] As a further description of the above technical scheme:

[0012] The outer bottom of the tubular body is provided with a threaded groove, and one side of the cutter no.

[0013] As a further description of the above technical scheme:

[0014] The inner side of the tubular body is fixedly connected with a damping bushing, and the surface of the damping bushing is smoothly treated.

[0015] As a further description of the above technical scheme:

[0016] The outer diameter of the collar is matched with the outer diameter of the first cutter head and the second cutter head, and the surfaces of the first cutter head and the second cutter head are wear-resistant treated.

[0017] As a further description of the above technical solution:

[0018] The left end of the shaft sleeve is fixedly connected with a fixed lug on the front and rear sides, and the front side of the fixed lug is fixedly connected with a gasket.

[0019] As a further description of the above technical solution:

[0020] The front end of the gasket is threadedly connected with a bolt, the rear end of the bolt penetrates the gasket and the fixed lug in sequence, and the rear end of the bolt is threadedly connected with a nut.

[0021] The utility model has the advantages of the following:

[0022] 1. In the utility model, when the device is performing a drilling task, first, the second cutter head is used to drill until the hard rock layer is reached, then the rotating tooth ring is used to rotate the second gear, thereby rotating the second gear together, the first gear is used to rotate the threaded rod, the sliding block can drive the sliding column to slide up and down in the hollow column, the second cutter head is retracted with the movement of the sliding column, the first cutter head contacts the hard rock layer to continue drilling, the type of cutting tooth is quickly adjusted, the working efficiency is improved, and the needs of the user can be met.

[0023] 2. In the utility model, after the drilling task is completed, when the rock core collected in the pipe needs to be taken out, the knocking mechanism is installed on the outer wall of the pipe body, the eccentric wheel is driven to rotate by starting the motor, the connecting rod and the knocking column are moved by the rotating characteristics of the eccentric wheel, the knocking column can knock the pipeline with stable knocking force and frequency, the pipeline is dredged to avoid rock core blockage. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of the multifunctional coring drill bit for geotechnical investigation is provided in the utility model;

[0025] Figure 2 A front view of the multifunctional coring drill bit for geotechnical investigation is provided in the utility model;

[0026] Figure 3 A partial structure split view of the multifunctional coring drill bit for geotechnical investigation is provided in the utility model;

[0027] Figure 4 A partial structure split view of the multifunctional coring drill bit for geotechnical investigation is provided in the utility model;

[0028] Figure 5 A Figure 4 enlarged view of A in the utility model;

[0029] Figure 6 The utility model provides a shell structure section view of geotechnical investigation multifunctional coring drill head.

[0030] Legend:

[0031] 1, pipe body; 2, knocking mechanism; 201, shaft sleeve; 202, shell; 203, motor; 204, eccentric wheel; 205, connecting rod; 206, knock column; 3, fixed column; 4, cutter head one; 5, hollow column; 6, threaded rod; 7, limit block; 8, sliding block; 9, sliding column; 10, cutter head two; 11, gear one; 12, gear two; 13, gear ring; 14, rotating rod; 15, sleeve ring; 16, sliding groove; 17, threaded groove; 18, drainage groove; 19, fixed lug; 20, bolt; 21, damping bushing; 22, nut; 23, gasket. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0033] Reference Figure 1 , Figure 4 and Figure 5The utility model provides a kind of embodiment: geotechnical investigation multifunctional coring drill bit, the top of pipe body 1 equidistance is fixedly connected with multiple fixed columns 3, the top of multiple fixed columns 3 is fixedly connected with cutter one 4, cutter one 4 is used to drill hard rock layer, multiple fixed columns 3 are fixedly connected with hollow column 5 between adjacent, the inside bottom of multiple hollow column 5 is rotatably connected with threaded rod 6, the top of multiple threaded rods 6 is fixedly connected with limit block 7, the outside top of multiple threaded rods 6 is threadedly connected with sliding block 8, sliding block 8 can move along threaded rod 6, limit block 7 then limit the moving distance of sliding block 8, the outside of multiple sliding blocks 8 is fixedly connected with sliding column 9, sliding block 8 drives sliding column 9 to move together, the top of multiple sliding columns 9 is fixedly connected with cutter two 10, cutter two 10 is used to drill in soft rock layer, the bottom of multiple threaded rods 6 is fixedly connected with gear one 11 and is penetrated through hollow column 5, the top equidistance of pipe body 1 is rotatably connected with multiple rotating rods 14, the outer wall of multiple rotating rods 14 is fixedly connected with gear two 12, multiple gear two 12 are meshed with corresponding gear one 11 respectively, gear two 12 can drive gear one 11 to rotate, the outer wall middle upper portion of pipe body 1 is rotatably connected with collar 15, the inside of collar 15 is fixedly connected with gear ring 13, multiple gear two 12 are meshed with gear ring 13, the outer wall middle upper portion of pipe body 1 is provided with sliding groove 16, the inside bottom of collar 15 is slidably connected in sliding groove 16, and sliding groove 16 can fix and limit the function of collar 15;

[0034] Specifically, in drilling operation, first, cutter two 10 is used to drill, as the drilling depth increases, when cutter two 10 encounters hard rock layer, through rotating and sliding rotating in sliding groove 16, inside gear ring 13 is driven to rotate, the rotation of gear ring 13 further drives multiple meshed gear two 12 to rotate, the rotation of gear two 12 drives gear one 11 meshed with it to rotate, as gear one 11 rotates, corresponding threaded rod 6 also starts to rotate, the rotation of threaded rod 6 makes sliding block 8 threadedly connected with it move downward along threaded rod 6, the downward movement of sliding block 8 drives sliding column 9 fixedly connected with its outside to move downward, sliding column 9 slides in hollow column 5, and also makes cutter two 10 at the top move downward, as cutter two 10 gradually descends, cutter one 4 starts to contact hard rock layer, and drilling continues, by rapidly replacing cutter two 10 and cutter one 4, the use of cutter can be flexibly adjusted to adapt to different geological conditions, so as to reduce the wear of cutter in unsuitable conditions.

[0035] Refer to Figure 1 、 Figure 2 And Figure 6, the knocking mechanism 2 comprises a shaft sleeve 201 provided in the outer wall of the pipe body 1 at the lower part, the right side of the shaft sleeve 201 is fixedly connected with a shell 202, the bottom of the shell 202 is fixedly connected with a motor 203, the motor 203 is outside the shell 202 to facilitate heat dissipation, the top end of the motor 203 penetrates the shell 202 and is fixedly connected with an eccentric wheel 204, the top end left side of the eccentric wheel 204 is rotatably connected with a connecting rod 205, the eccentric wheel 204 can drive the connecting rod 205 to move, the other end of the connecting rod 205 is rotatably connected with a knocking column 206, the left end of the knocking column 206 penetrates the shell 202 and the shaft sleeve 201 in sequence, so that the knocking column 206 can knock the pipe body 1, the outer bottom of the pipe body 1 is provided with a threaded groove 17, and the one side of the tool bit one 4 and the tool bit two 10 is provided with a drainage groove 18;

[0036] Specifically, when the cooling liquid injected through the pipeline in the drilling task is discharged through the drainage groove 18 after cooling the drill bit, the threaded groove 17 is used to connect the drill bit with other pipelines, and when the rock core is taken out from the drilling pipe after the drilling is completed, the rock core is blocked in the pipe, the knocking mechanism 2 is installed on the outer wall of the pipe body 1, the motor 203 is started, the rotation of the motor 203 drives the eccentric wheel 204 to rotate, the top of the eccentric wheel 204 is connected with the connecting rod 205, the connecting rod 205 can swing according to the rotation characteristics of the eccentric wheel 204, the other end of the connecting rod 205 is connected with the knocking column 206, since the knocking column 206 penetrates the shaft sleeve 201 and the shell 202, the shaft sleeve 201 and the shell 202 limit the movement direction of the knocking column 206, when the connecting rod 205 swings, the knocking column 206 is guided to reciprocate linearly under the limitation of the shaft sleeve 201 and the shell 202, the constant knocking force and frequency can be used to clean the pipeline while the integrity of the rock core is maximized.

[0037] Referring to Figure 1 , Figure 2 and Figure 3 , the inner side of the pipe body 1 is fixedly connected with a damping bushing 21, the surface of the damping bushing 21 is smoothly treated, the rock core can be more smoothly put into the pipe, the outer diameter size of the sleeve ring 15 matches the outer diameter size of the tool bit one 4 and the tool bit two 10, and the surfaces of the tool bit one 4 and the tool bit two 10 are wear-resistant treated;

[0038] Specifically, the continuous rotation of the drill bit makes the rock core enter the inside of the pipeline, the damping bushing 21 is used to buffer the rock core and the inner wall of the pipeline to prevent the rock core from being broken and affecting the detection result, the size of the sleeve ring 15 does not affect the drilling of the tool bit one 4 and the tool bit two 10, and the tool bit one 4 and the tool bit two 10 are more wear-resistant after wear-resistant treatment, so that the wear rate of the drill bit is reduced.

[0039] Referring to Figure 2 and Figure 6The left end of the shaft sleeve 201 is fixedly connected with a fixed lug 19 on the front and back sides, the front fixed lug 19 is fixedly connected with a gasket 23 on the front side, which can prevent loosening, the front end of the gasket 23 is threadedly connected with a bolt 20, the bolt 20 is used to connect the fixed lug 19, the rear end of the bolt 20 penetrates the gasket 23 and the fixed lug 19 in sequence, and the rear end of the bolt 20 is threadedly connected with a nut 22;

[0040] Specifically, the bolt 20 penetrates the gasket 23 and the fixed lug 19, so that the shaft sleeve 201 is fixed on the surface of the pipe body 1, facilitating the knocking mechanism 2 to knock the pipe body 1, and the nut 22 is used to fix the bolt 20, and the gasket 23 plays a role in fastening and preventing loosening.

[0041] Working principle: during the drilling process, the drill bit first uses the cutter 2 to drill, as the drilling depth increases, when the cutter 2 encounters hard rock, at this time, the sleeve ring 15 is rotated, the sleeve ring 15 drives the inner tooth ring 13 to rotate, the tooth ring 13 rotates to drive the plurality of gear 2 to rotate, the plurality of gear 2 rotates to drive the meshing gear 1 to rotate, as the plurality of gear 1 rotates, the corresponding threaded rod 6 can be rotated, and the threaded rod 6 rotates to drive the sliding block 8 connected with the threaded rod 6 to move downward, when the sliding block 8 moves downward, the sliding column 9 fixedly connected to the outer side also moves downward, at this time, the sliding column 9 can slide in the hollow column 5, and the cutter 2 at the top also moves downward, as the cutter 2 gradually descends, the cutter 1 begins to contact the hard rock, and the cutter 1 continues to drill, by quickly replacing the cutter 2 and the cutter 1, the cutter 2 and the cutter 1 can be flexibly adjusted according to the corresponding application conditions, and the wear of the cutter under the inappropriate conditions is reduced;

[0042] When the drilling task is completed and the drilling pipe and the drill bit are taken out, the core needs to be taken out from the pipe, the core will be blocked in the pipe at this time, the knocking mechanism 2 is installed on the outer wall of the pipe body 1, and then the motor 203 is started, the motor 203 drives the eccentric wheel 204 to rotate, the connecting rod 205 connected to the top of the eccentric wheel 204 can swing according to the rotation characteristics of the eccentric wheel 204, and the other end of the connecting rod 205 is connected with the knocking column 206, since the knocking column 206 penetrates the shaft sleeve 201 and the shell 202, the shaft sleeve 201 and the shell 202 limit the movement direction of the knocking column 206 at this time, therefore, when the connecting rod 205 swings, the knocking column 206 moves in a straight line under the limitation of the shaft sleeve 201 and the shell 202, so that the knocking force and frequency are stable, the pipe is dredged, and the integrity of the core is protected to the maximum extent.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A multi-functional coring drill bit for geotechnical investigation, comprising a tube body (1), characterized in that: The top of the pipe body (1) is equidistantly fixedly connected with a plurality of fixed columns (3), the top of each of the plurality of fixed columns (3) is fixedly connected with a cutter head (4), the adjacent fixed columns (3) are fixedly connected with a hollow column (5), the inner side bottom of each of the plurality of hollow columns (5) is rotatably connected with a threaded rod (6), the top end of each of the plurality of threaded rods (6) is fixedly connected with a limiting block (7), the outer side top of each of the plurality of threaded rods (6) is threadedly connected with a sliding block (8), the outer side of each of the plurality of sliding blocks (8) is fixedly connected with a sliding column (9), the top of each of the plurality of sliding columns (9) is fixedly connected with a cutter head (10), the bottom end of each of the plurality of threaded rods (6) penetrates through the hollow column (5) and is fixedly connected with a gear (11), the top of the pipe body (1) is rotatably connected with a plurality of rotating rods (14), the outer wall of each of the plurality of rotating rods (14) is fixedly connected with a gear (12), each of the plurality of gears (12) is meshingly connected with the corresponding gear (11), the outer wall of the pipe body (1) is rotatably connected with a sleeve ring (15) at the middle upper portion, the inner side of the sleeve ring (15) is fixedly connected with a gear ring (13), each of the plurality of gears (12) is meshingly connected with the gear ring (13), the right side of the pipe body (1) is provided with a knocking mechanism (2), and the knocking mechanism (2) is used for knocking the pipeline when the rock core is taken out so that the rock core does not block the pipeline.

2. The multi-functional coring bit for geotechnical investigation according to claim 1, characterized in that: The knocking mechanism (2) comprises a shaft sleeve (201), the shaft sleeve (201) is arranged on the outer wall of the pipe body (1) at the middle lower portion, the right side of the shaft sleeve (201) is fixedly connected with a shell (202), the bottom of the shell (202) is fixedly connected with a motor (203), the top end of the motor (203) penetrates through the shell (202) and is fixedly connected with an eccentric wheel (204), the top end left side of the eccentric wheel (204) is rotatably connected with a connecting rod (205), the other end of the connecting rod (205) is rotatably connected with a knocking column (206), and the left end of the knocking column (206) penetrates through the shell (202) and the shaft sleeve (201) in sequence.

3. The multi-functional coring bit for geotechnical investigation according to claim 1, characterized in that: The outer wall of the pipe body (1) is provided with a sliding groove (16) at the middle upper portion, and the inner side bottom of the sleeve ring (15) is slidably connected in the sliding groove (16).

4. The multi-functional coring bit for geotechnical investigation according to claim 1, characterized in that: The outer side bottom of the pipe body (1) is provided with a threaded groove (17), and one side of each of the cutter head (4) and the cutter head (10) is provided with a drainage groove (18).

5. The multi-functional coring bit for geotechnical investigation according to claim 1, characterized in that: The inner side of the pipe body (1) is fixedly connected with a damping bushing (21), and the surface of the damping bushing (21) is smoothly treated.

6. The multi-functional coring bit for geotechnical investigation according to claim 1, characterized in that: The outer diameter size of the sleeve ring (15) matches the outer diameter size of the cutter head (4) and the cutter head (10), and the surfaces of the cutter head (4) and the cutter head (10) are wear-resistant treated.

7. The multi-functional coring bit for geotechnical investigation according to claim 2, characterized in that: The left end front and back sides of the shaft sleeve (201) are fixedly connected with fixed ears (19), and the front side of the front fixed ear (19) is fixedly connected with a gasket (23).

8. The multi-functional coring bit for geotechnical investigation according to claim 7, characterized in that: The bolt (20) is screwed at the front end of the gasket (23), the rear end of the bolt (20) penetrates the gasket (23) and the fixing lug (19) in sequence, and the rear end of the bolt (20) is screwed with the nut (22).

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